Mobile is changing the way enterprises think the same way the web did: very slowly.
They will recognize the need long before they act on it. And when they act on it, it will be on an offering built to their specifications, with data connections to other enterprise systems that they have millions invested in.
And most of the initial mobile rollout for enterprise will be shoddy half-assed stabs in the dark by the same enterprise vendors they already have, that are neither well designed, nor disruptive, nor will they deliver on the promise of mobile particularly well.
The adoption rate may be slow but the market is massive, probably comparable to consumer web when you include all the medium and large business in the world. Combined with the fact that smart phones are becoming more and more popular among the consumers (i.e. the employees of these businesses), the uncaptured market size is growing fast.
Even now in slow industries like ECAD and MCAD I see AutoDesk, Dassault Solidworks, and Altium working on more collaborative software like their PDMs (like Solidworks Vault) and more mobile applications to view and annotate CAD models. AutoDesk especially has exploded with many web and mobile apps ranging from 3D scanning to editing and 3d printing.
I don't think 2013 is the year but it is certainly only the beginning.
I disagree that the enterprise market is growing that fast. Each new mobile enterprise user used to be a laptop enterprise user. This isn't a market that's drawing in new people, only migrating the existing ones to a different technology.
But that's every emerging market. Facebook didn't find a billion new people, they just got a billion people to do something different with their time, and that's all any new market does: get people to do something different with their time, money or attention.
So while the enterprise market isn't growing, the mobile enterprise market is.
Yes but unlike the laptop market, the mobile phone market is much more socioeconomically diverse. With the availability of internet access becoming more and more widespread around the world, more companies will be able to cheaply adopt it where it couldn't adopt any new technologies before.